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LM3668

National Semiconductor
Part Number LM3668
Manufacturer National Semiconductor
Description High Efficiency Dual Mode Single Inductor Buck-Boost DC/DC Converter
Published Aug 14, 2007
Detailed Description www.DataSheet4U.com June 2007 LM3668 1A, High Efficiency Dual Mode Single Inductor Buck-Boost DC/DC Converter LM3668 1...
Datasheet PDF File LM3668 PDF File

LM3668
LM3668

Overview
www.
DataSheet4U.
com June 2007 LM3668 1A, High Efficiency Dual Mode Single Inductor Buck-Boost DC/DC Converter LM3668 1A, High Efficiency Dual Mode Single Inductor Buck-Boost DC/DC Converter General Description The LM3668 is a synchornous buck or boost DC-DC converter optimized for powering low voltage circuits from a Li-Ion battery and input voltage rails between 2.
5V and 5.
5V.
It has the capability to support up to 1A output current over a output voltage range of 2.
8V/3.
3V.
The LM3668 regulates the output voltage over the complete input voltage range by automatically switching between buck or boost modes depending on the input voltage.
The LM3668 has 2 N-channel MOSFETS and 2 P-channel MOSFETS arranged in a topology that provides continuous operation through the buck and boost operating modes.
There is a MODE pin that allows the user to choose between an intelligent automatic PFM-PWM mode operation and forced PWM operation.
During PWM mode, a fixed-frequency 2.
2MHz (typ.
) is used.
P...


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